ESP BS5839 Manual Download

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Vertical shafts like lifts and stairways should have a device mounted within

1.5m of any opening.

Enclosed stairways should have a detector on each main landing.

The sensing element of a heat detection device (thermistor) should not be less

than 25mm below ceiling, and not greater than 150mm below ceiling.

The sensing element of a smoke detection device (photoelectric smoke

chamber) should not be less than 25mm below ceiling, and not greater than

600mm below ceiling.

Smoke Detectors

Optical Chamber

25mm

600mm

Heat Detectors

Thermistor

25mm

150mm

(Sub landing)

Lift Shaft

1.5m

Summary of Contents for BS5839

Page 1: ...www es p u k com BS5839 PART 1 2017 A GUIDE TO FIRE ALARM SYSTEMS DESIGN AUTHORISED DISTRIBUTOR Birmingham Call 0121 359 5387 Cannock Call 01543 271362...

Page 2: ...L4 P1 P2 CATEGORIES FireAlarmandFireDetectionsystemsarecategorised in the following way P AFD designed to primarily protect property P1 AFD installed throughout all areas P2 AFD Installed only in defi...

Page 3: ...ual coverage of 5 3m radius However these radii must overlap to ensure there are no blind spots Therefore the individual coverage can be represented by a square measuring 7 5 x 7 5m giving an actual a...

Page 4: ...Detectors must not be sited less than 1m from air inlets or air conditioning units A device should not be mounted within 500mm of any obstruction If the top of a solid partition is less than 300mm fr...

Page 5: ...stalled at the highest point The distance to adjacent devices can be increased by 1 per degree of angle of the roof up to a maximum of 25 Detector Type Ceiling Height m General Limits Maximum Heat RoR...

Page 6: ...lement of a heat detection device thermistor should not be less than 25mm below ceiling and not greater than 150mm below ceiling The sensing element of a smoke detection device photoelectric smoke cha...

Page 7: ...ion All manual call points should be fitted with a protective cover which is moved to gain access to the frangible element MANUAL CALL POINTS MCP A person should not have to travel more than 45m along...

Page 8: ...reduced to 60dB A in stairways enclosures up to 60m and specific points of limited extent Sounder device cabling should be arranged so that in the event of a fault at least one sounder will remain ope...

Page 9: ...the manufacturer For all categories the volume covered can be used to determine VAD spacing within the building Open category allows manufacturers to specify the coverage shape and volume and does no...

Page 10: ...onal built in sounder allowing the whole system to be installed using only one pair of wires per zone That means easier faster installations AND cost savings 2 Wire Fire Alarm System FIRE DETECTION AL...

Page 11: ...n still be transmitted to devices from either end of the loop Although conventional fire alarm system cost less to purchase they are generally more expensive to install This is due to each zone for de...

Page 12: ...th the recommendations of BS5839 1 FREE SYSTEM DESIGN ESP can offer a team of dedicated design engineers who are fully trained qualified in all of the relevant British Standards We are able to provide...

Page 13: ...dustrial Estate Dublin Ireland Tel 353 1 5577 290 Fax 353 1 2811 224 sales espi ie www espi ie Here at ESP we offer free training aimed at electrical contractors and wholesalers who would like to add...